Ingot stripper



Jure 9, 1936. W, L ?.4 POT() 2,043,593

INGOT STRIPPER Filed May 24, 1934 2 sheets-sheet 1 June 9, 1936. W. l PoTo ..I 2,043,593

INGT STRIPPER I Y Y Filed May 24, 1954 2 sheets-sheet 2 l l l l I 15- 1 l INVENTOR Patented June 9, 1936 INGOT STRIPPER.

William L. Poto, Alliance, Ohio, assignor to The Alliance Machine Company, Alliance, Ohio, a

corporation of Ohio Application May 24, 1934, Serial No. 727,257

6 claims. (o1. 22-95) This invention relates to a device for stripping ingots from molds, and more particularly to a device for stripping big top ingots without hot tops from molds. The device of the present invention is described herein as used in conjunction with an ingot stripper of the type disclosed in Kendall Patent 2,007,275, granted July 9, 1935, although it is to be understood that my device may be employed with other types of ingot strippers.

In the accompanying drawings which illustrate the present preferred embodiment of my invention- Figure l is a longitudinal, vertical section taken on the line I--I of Figure 3, parts being shown in elevation, Figure 1 also illustrating an ingot mold and a part of the stripping mechanism;

Figure 2 is a transverse vertical section taken on the line IIII of'Figure 3; and

Figure 3 is a plan View of the device shown in Figure 2. t

Referring more particularly to the accompanying drawings, the ingot stripper comprises a frame formed by longitudinal I-beams 2 and transverse I-beams 3 at the ends thereof, the frame being secured to a foundation 4 by bolts 5. At the center of the frame is a mold support 6 secured to the I-beams 2 by bolts 'I. The mold support 6 is provided with an opening 8 through which a ram 9 extends, the ram being seated in a socket I in a yoke II, and secured tothe yoke by a bolt I2.

The mold support 6 supports a mold bottom I3 and an ingot mold I4. The mold bottom is provided with a downwardly extending projection I which lits into a corresponding opening in the mold support and acts as a guide in placing the mold in proper position within the frame.

The yoke II is of general U-shape, being open at the top and closed at the bottom, and straddles the mold support 6. It has an inner flange I5 and an outer flange Il joined by a web I8. The outer iiange I'I extends only a part of the total height of the yoke, and the yoke is provided at the ends of the ange Il with lugs I9.

The yoke II is guided and supported by upstanding guides 20, one guide being arranged adjacent each end of the frame. Each of the guides comprises a horizontal flange 2| secured by bolts 22 to the frame, and a vertically extending iiange 23, on the top end of which the lugs I9 rest when the yoke is in its lowermost position, as indicated in Figure l. The anges 23 prevent longitudinal movement of the yoke. Extending inwardly from each of the anges 23 are two flanges 24 which are spaced apart a distance slightly greater than the width of the yoke I I and form guides for the yoke preventing it from moving transversely. The guides 2l! are provided with reinforcing ribs 25 which extend from the horizontal flange ZI to the top edge of the vertical flange 23.

Tongs Sil which may constitute a part of any suitable stripping mechanism capable of being raised and lowered, are provided at their lower ends with lifting lugs 3| and 32. When the tongs are moved into the chain line position indicated in Figure 1, the lugs 3I are brought into engagement with lugs 33 on the ingot mold, but when the tongs 3H are in the full line position indicated in this figure, the lugs 32 are in engagement with inwardly projecting lugs 34 formed adjacent the upper ends of the yoke. In this manner, the tongs 36 may be brought into engagement with either the ingot mold or the yoke without raising or lowering the tongs and with only a minimum amount of movement.

4The stripping mechanism is also provided with tongs pivoted asindicated by the reference numeral 36. In the present invention, the tongs 35 are used as holding down means for the ingot mold. Other suitable means may, however, be employed for this purpose. The stripper disclosed in the Kendall patent previously mentioned is suitable for stripping either big end up ingots provided with hot tops, or big end down ingots, the tongs 35 being employed in the Kendall device as ingot extractor tongs. The present invention utilizes the tongs 35 as holding down means for the ingot mold, thereby rendering the Kendall ingot stripper available for stripping big end up ingots either with or Without hot tops, as well as big end down ingots.

In stripping an ingot in accordance with the present invention, the tongs 30 are engaged with the lugs 33 on the mold and the stripper crane moves the mold and ingot from the car and places it on the mold support 6. The mold support is preferably at approximately the same elevation as the car so that it is unnecessary to raise or lower the mold any substantial distance in transferring it from the car to the mold support. The frame which carries the mold support is open at its sides 31 so that the transfer from the car to the mold support can be made without substantial raising or lowering of the mold.

When the mold and ingot are in position on the mold support, the tongs 30 are disengaged from the mold and brought into engagement with the lugs 34 on the lifting yoke II. The tongs 30 are then raised by the crane, thereby lifting the yoke and also the ram 9. During the lifting operation, the mold is held down by the tongs 35. The ram extends through openings in the mold support 6, the mold bottom I3 and the mold I4, and raises the ingot from the mold. A wedge is then placed in position to prevent the ingot from slipping back into the mold when the ram and yoke are lowered, and the tongs 30 are then re-engaged with the lugs 33 on the mold and the ingot and mold are transferred to the car.

The present invention eliminates considerable raising and lowering of the crane which has been necessary in prior devices used for stripping ingots of this character. The stripping crane is relieved from all dead loading during the stripping operation. The maximum load to be lifted by the stripping crane comprises the Weight of the mold and ingot, whereas with other arrangements now in use, the weight of the entire mechanism employed as well as the weight of the mold and ingot is suspended from the stripper crane during the time that it is in use.

I have illustrated and described the present preferred embodiment of my invention. It is to be understood, however, that the invention may be otherwise embodied within the scope of the following claims.

I claim:

1. A device for stripping an ingot from a mold, comprising a frame, a yoke open at its top and movable vertically relative to said frame and guided thereby, inwardly projecting lifting lugs on said yoke, a ram carried by said yoke, a mold support within said frame, means for holding down a mold on its support, two-way engagement tongs adapted to engage either the mold or the yoke, and means for raising said tongs to strip an ingot from the mold.

l2. A device for stripping an ingot from a mold, comprising a frame having at least one open side and upstanding guides adjacent its ends, a yoke open at its top and movable vertically relative to said frame within said guides, a ram carried by said yoke, a mold support within said frame, means for holding down a mold on its support, and two-way engagement tongs adapted to engage either the mold or the yoke.

3. A device for stripping an ingot from a mold, comprising a frame having upstanding guides adjacent its ends, a mold support carried by and within said frame but spaced from the ends thereof, a member straddling said mold support and movable vertically relative to said frame within said guides, means for holding down a mold on its support, and means for raising said member to strip an ingot from the mold.

4. A device for stripping an ingot from a mold,

comprising a frame having at least one open side and upstanding guides adjacent its ends, a mold support carried by and within said frame but spaced from the ends thereof, a member straddling said mold support and movable vertically relative to said frame Within said guides, means for holding down a mold on its support, and means for raising said member to strip an ingot from the mold.

5. A device for stripping an ingot from a mold, comprising a frame having at least one open side and upstanding guides adjacent its ends, a mold support carried by and within said frame but spaced from the ends thereof, a U-shaped yoke open at its top straddling said mold support and movable vertically relative to said frame within said guides, means for holding down a mold on its support, and means for raising said yoke to strip an ingot from the mold.

6. A device for stripping an ingot from a mold,

comprising a frame, a mold support carried by 

